D3.js lineRadial() Method

Last Updated : 30 Mar, 2023

The d3.lineRadial() method is used to construct a new Radial line generator with the default settings. The Radial line generator is then used to make a Radial line.

Syntax:

d3.lineRadial();

Parameters: This method does not accept any parameters.

Return Value: This method returns a Radial line Generator.

Example 1: The following example makes a Radial curve line using this method.

HTML

<!DOCTYPE html> 
<html> 
  
<head> 
    <script src=" 
https://cdnjs.cloudflare.com/ajax/libs/d3/4.2.2/d3.min.js"> 
    </script> 
  
    <script src=" 
https://d3js.org/d3.v4.min.js"> 
    </script> 
</head> 
  
<body> 
    <h1 style="text-align:center;color: green;"> 
        GeeksforGeeks 
    </h1> 
    <center> 
        <svg id="gfg" width="200" height="200"> 
            <g transform="translate(100, 100)"></g> 
        </svg> 
    </center> 
  
    <script> 
        var lineRadialGenerator = d3.lineRadial(); 
        var data = [ 
            [0, 10], 
            [3.14 * .5, 35], 
            [3.14 * .75, 55], 
            [3.14, 60], 
            [3.14 * 1.25, 65], 
            [3.14 * 1.5, 70], 
            [3.14 * 1.75, 75], 
            [3.14 * 2, 80], 
            [3.14 * 2.25, 85], 
            [3.14 * 2.5, 90], 
            [3.14 * 2.75, 95], 
            [3.14 * 3, 100], 
            [3.14 * 3.25, 105], 
            [3.14 * 3.5, 110]]; 
  
        var a = lineRadialGenerator(data); 
  
        d3.select("#gfg") 
            .select("g") 
            .append("path") 
            .attr("d", a) 
            .attr("fill", "none") 
            .attr("stroke", "green"); 
    </script> 
</body> 
  
</html> 

Output:

Example 2:

HTML

<!DOCTYPE html> 
<html> 
  
<head> 
    <meta charset="utf-8"> 
  
    <script src=" 
https://cdnjs.cloudflare.com/ajax/libs/d3/4.2.2/d3.min.js"> 
    </script> 
    <script src= 
        "https://d3js.org/d3.v4.min.js"> 
    </script> 
</head> 
  
<body> 
    <h1 style="text-align:center; color:green;"> 
        GeeksforGeeks</h1> 
    <center> 
        <svg id="gfg" width="200" height="200"> 
            <g transform="translate(100, 100)"></g> 
        </svg> 
    </center> 
  
    <script> 
        var lineRadialGenerator = d3.lineRadial(); 
        var data = [ 
            [0, 80], 
            [(Math.PI * 0.25), 80], 
            [(Math.PI * 0.5), 80], 
            [(Math.PI * 0.75), 80], 
            [(Math.PI), 80], 
            [(Math.PI * 1.25), 80], 
            [(Math.PI * 1.5), 80], 
            [(Math.PI * 1.75), 80], 
            [(Math.PI * 2), 80] 
        ]; 
        var a = lineRadialGenerator(data); 
  
        d3.select("#gfg") 
            .select("g") 
            .append("path") 
            .attr("d", a) 
            .attr("fill", "none") 
            .attr("stroke", "green"); 
    </script> 
</body> 
  
</html> 